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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 2551. |
What is translocation? |
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| 2552. |
IS TsLosiccP2. A person put warm water in an aquarium, thinking that the fish would be more comfortin it. However, the fish died. What can be the reason for this?HINT: the solubility of a gas in water goes down as its temperature increases) |
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| 2553. |
Q.12. Complete and balance thequestions(a) Ca(OH2 C2 Lo(b) Caso,MH20+ H2O-air(c)Na2CO3-10H20 |
| Answer» <p>caocl2 +h20caso4+1.5H20Na2CO3+10H20</p> | |
| 2554. |
12cmf mixxas then Find pos |
| Answer» <p>an object is placed at i)10cm, ii)5cm in front of a concave mirror of radius of curvature 15 cm. find the position, nature, and magnifiaction of the image in each case.</p> <p>Given:</p><p>the radius of curvature of theconcave mirror(R) = 15 cmtherefore,focal lengthof the mirror = -7.5cm</p><p>(as focal length(f) = 1/2 * radius of curvature of the mirror(R))i)Object distance(u) = -10cmLet image distance from pole = v cmusingmirror formula: - 1/v + 1/u =1/f1/v = 1/f - 1/u1/v = -1/7.5 - (- 1/10)1/v = -1/7.5 + 1/101/v = (-100 + 75)/7501/v = -25/7501/v = -1/30therefore v = -30cmtherefore image is formed at 30cm from the pole of the mirror in front of the mirror.</p><p>magnification(m) = -v/um = [-(-30)]/-10m = -3here minus sign indicates that the image is inverted in nature.therefore the image is formed at 30cm from the pole of the mirror in front of the mirrorit is inverted in nature and Magnification = -3</p><p>ii) Object distance= -5cm</p><p>Let the image distance from pole= v cm</p><p>Using the mirror formula : 1/v +1/u = 1/f</p><p>1/v = 1/f -1/u</p><p>1/v = -1/7.5 –(-1/5)</p><p>1/v= - 10/75 + 1/5</p><p>1/v= 5/375</p><p>1/v= 1/15 cm</p><p>v= 15cm</p><p>therefore the image is formed at 15cm from the pole of the mirror</p><p>magnification (m)= -v/u</p><p>m=-(15)/-5</p><p>m=3</p><p>therefore the image is formed 15cm from the pole it is erect n magnification=3cm</p> <p>This was solution to a similar question, kindly follow the methodology.</p> | |
| 2555. |
1Define Naclear sine and Nuclear density Show thatnuclear density is the same for all nuclei 1+1+1 |
| Answer» <p>Nuclear size is defined by nuclear radius, also called rms charge radius. It can be measured by the scattering of electrons by the nucleus and also inferred from the effects of finite nuclear size on electron energy levels as measured in atomic spectra.Nuclear density is the density of the nucleus of an atom, averaging about 2.3×10^17kg/m^3</p> | |
| 2556. |
Balance the following equation stepwiseAg+HCl->AgCl+H2 |
| Answer» <p>Ag + 2HCl. = AgCl + H2Ag + 2HCl. =. 2AgCl + H2</p><p>2Ag + 2HCl. = 2AgCl + H2. ( Balanced Equation)</p> | |
| 2557. |
Tus produces brin dimiwhich is responsiblC3 Match the two columns.Column AColumn B1. The amount of heat released when(i) Fire extinguishera unit quantity of fuel is completely burnt2. Spontaneous combustion(ii) Oxygen (1)3. A device to extinguish fire(iii) Air pollution4. Supporter of combustion.(iv) Foods5. Fuel for our body,6. Incomplete combustion of coal(vi) White phosphorousC4. Multiple Choice Questions (MCQs): Choose the correct answer for each of the(v) Calorific value 1) |
| Answer» <p>1---(v)2---(iii)3---(i)4---(ii)5---(IV)6---(vi)</p> | |
| 2558. |
types of nuclear power plant |
| Answer» <p>Types of Reactors</p><p>Commercial Reactors Around the World</p><p>There are six main reactor types in use around the world. The various designs use different concentrations of uranium for fuel, different moderators to slow down the fission process, and different coolants to transfer heat.</p><p>The most common reactor type is the pressurized water reactor (PWR), representing 250 of the world’s 392 reactors now operating.</p><p>Pressurized water reactor.</p><p>Pressurized water reactors (PWRs) are the most common type of reactor worldwide. PWRs use ordinary (or “light”) water as both coolant and moderator. The coolant is pressurized to stop it from flashing into steam keep it liquid during operation. Powerful pumps circulate the water through pipes, transferring heat that boils water in a separate, secondary loop. The resulting steam drives the electricity-producing turbine generators.</p><p>Theprocess of generating power with PWRsis demonstrated in a YouTube video.</p><p>Boiling Water Reactors</p><p></p><p>Boiling water reactor.</p><p>Boiling water reactors (BWRs) make up 15% of reactors globally. In a BWR, light water acts as both coolant and moderator. The coolant is kept at a lower pressure than in a PWR, allowing it to boil. The steam is passed directly to the turbine generators to produce electricity. While the absence of a steam generator simplifies the design, radioactivity can contaminate the turbine.</p><p>Theprocess of generating power with BWRsis demonstrated in a YouTube video.</p><p>Pressurized Heavy Water Reactors</p><p></p><p>Pressurized heavy water reactor.</p><p>Also known as CANDU reactors, pressurized heavy water reactors (PHWRs) represent about 12% of the reactors in the world and are used at all Canadian nuclear power generation stations. They use heavy water as both coolant and moderator, and use natural uranium as fuel. As in a PWR, the coolant is used to boil ordinary water in a separate loop. CANDU reactors can be refuelled without shutting the reaction down.</p><p>TheCANDU processis demonstrated in a YouTube video.</p><p>Gas-Cooled Reactors</p><p>Gas-cooled reactors (GCRs) are in use only in the United Kingdom. There are two types, the Magnox (named from the magnesium alloy used to clad the fuel elements) and the advanced gas-cooled reactor (AGR). Both types use carbon dioxide as the coolant and graphite as the moderator. The Magnox uses natural uranium as fuel, while the AGR uses enriched uranium. Like CANDU reactors, these designs can be refueled while operating.</p><p>Light Water Graphite Reactors</p><p>Light water graphite reactors (LWGRs) are used in Russia, with ordinary water as the coolant and graphite as the moderator. As with BWRs, the coolant boils as it passes through the reactor and the resulting steam is passed directly to turbine generators. Early LWGR designs were often built and operated without the safety characteristics and features required elsewhere. The well known 1986 accident at Chernobyl (Ukraine) happened to a reactor of this type.</p><p>Features of LWGRsare described in a YouTube video.</p><p>Fast Breeder Reactors</p><p></p><p>Fast breeder reactor.</p><p>Because slow neutrons are more likely to split uranium atoms, most reactor types are designed to make use of them. In contrast, fast breeder reactors (FBRs) use fast neutrons to convert materials such as uranium-238 and thorium-232 into fissile materials, which then fuel the reactor. This process, combined with recycling, has the potential to increase available nuclear fuel resources in the very long term. FBRs operate mainly in Russia.</p><p>The modern small modular reactor (SMR) is designed to be built economically in factory-like conditions (rather than onsite), and with capacities between approximately 10 MWe and 300 MWe.</p> | |
| 2559. |
PROPERTIES OF COLLOIDAL SOLUTIONS O |
| Answer» <p>colloidal soln apear homogeneous, two phasw system,carry charge</p> | |
| 2560. |
In hydroelectric power plants,is used for generating electricity |
| Answer» <p>In hydropower power plant water is used for generating electricity</p> | |
| 2561. |
1. Write down three elements which represent Dobereiner's triad |
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| 2562. |
1. What are the various states of matter? |
| Answer» <p>There are five known phases, or states, of matter: solids, liquids, gases,plasmaand Bose-Einstein condensates.</p> | |
| 2563. |
Define resistivity of a conductor. Write its SI unit. |
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| 2564. |
andCom |
| Answer» <p>Aspiration pneumonia is alunginfection that develops after you aspirate (inhale)food, liquid, or vomitinto your lungs.Ifyou are not able to cough up the aspirated material, bacteria can grow inyour lungsand cause an infection.</p> | |
| 2565. |
How many types of elements together make up the xylem tissue?Name them. |
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| 2566. |
TheParis Agreement is a historic step to encourage(a) world peace(b) sustainable development(c) reduction in emission of greenhouse gases(d wildlife conservation |
| Answer» <p>TheParis Agreement(French:AccorddeParis) is anagreementwithin the United Nations Framework Convention onClimateChange (UNFCCC), dealing with greenhouse-gas-emissions mitigation, adaptation, and finance, starting in the year 2020.option c</p> | |
| 2567. |
A sum of money doubles itself in 8 years.Find the rate of interest. |
| Answer» <p>If amount = 2* principal, interest = principal.INTEREST = PRT/100=> P= PRT/100=> RT = 100=> R = 100/8=> R = 12.5 %</p><p>PLEASE HIT THE LIKE BUTTON</p> | |
| 2568. |
who was the inventor of bulb? |
| Answer» <p>Thomas Edison invented bulb.</p> | |
| 2569. |
An electric bulb is connected to a 220V generator. The current is 0 50A What is the power of the bulb?Q9. State Ohm's Law. Write it mathematically. (2) |
| Answer» <p>Power=VI=220*0.5=110Watt</p> <p>Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.</p> <p>V is directly proportional to Ihence V=IR</p> | |
| 2570. |
ow did Hershey and Chase differentiate between DNA and protein inheirexperiment while proving that DNA is the genetic material? |
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| 2571. |
Name the body organs which help lungs during the process of breathing. |
| Answer» <p>Thebreathingprocess is aided by a large dome-shaped muscle under thelungscalled the diaphragm.</p> | |
| 2572. |
5. Name the body organs which help lungs during the process of breathing |
| Answer» <p>Nose/mouth , trachea , diaphragm</p> | |
| 2573. |
alk about itHow are the bodyorgans protected? |
| Answer» <p>Protecting the Internal Organs. The tissues and organs of which the human body is made need support. Many of them, like the lungs or the intestines, are very delicate and require protection. Support and protection are given to internal organs by the skeleton system.</p> | |
| 2574. |
Our brain is protected by- - - - - - - |
| Answer» <p>The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges. The brain is also cushioned and protected by cerebrospinal fluid. This watery fluid is produced by special cells in thefourhollow spaces in the brain, called ventricles.</p> | |
| 2575. |
und |
| Answer» <p>smjh me nhi aaya deeply bnaiye</p> | |
| 2576. |
xample 5. A ball is thrown vertically upwardswith a velocity of 25 m/s. If g is 10 m/s^2, thencalculate(i)height it reaches. (ii) time taken to return back |
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| 2577. |
. How will you separate fodihe hoa. How is cream separated from milk? |
| Answer» <p>The process of centrifugation is used in dairies to separate cream from milk . ... The milk is put in a closed container in big centrifuge machine . when the centrifuge machine is switched ON, the milk is rotated at very high speed in a container. Due to this process, milk separates into cream and skimmed milk.</p> | |
| 2578. |
Deficiency of.......hormone lead todwarfismGrowth hormoneThyroxineInsulinOestrogern |
| Answer» <p>deficiency of growth hormone leads dwarfism</p> | |
| 2579. |
16. Boojho stands at A just on the side of a plane mirror as shown in Fig.16.20. Can he see himself in the mirror? Also can he see the image ofobjects situated at P, O and R?A(Boojho) .PFig. 16.20 |
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| 2580. |
17. In the figure given below, with what accelerationdoes the block of mass m will move? (Pulley andstrings are massless and frictionless)2m3m |
| Answer» <p>Acceleration will beNet force/ total mass</p><p>Net force is 5mg-mg = 4mgTotal mass is 6m</p><p>Acceleration will be 4g/6 ms-2.</p> | |
| 2581. |
5. Find out the letters of English alphabet or any other language knovyou in which the image formed in a plane mirror appears exactlythe letter itself. Discuss your findings. |
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| 2582. |
tttisitS01tHEImagetormedby a plane mirrorFind out the letters of English alphabet or any other language known toyou in which the image formed in a plane mirror appears exactly likethe letter itself. Discuss your findings.5. |
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| 2583. |
State any two condittonsessential for good health |
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| 2584. |
What do you understand by PowerPoint? Explain its features. |
| Answer» <p>PowerPoint is a complete presentation Graphics package. It gives everything that we need to produce a professional-looking presentation. PowerPoint offers word processing software, outlining, drawing, graphing, and presentation management tools- all designed to be easy to use and learn.It is used in many places such as offices, schools , colleges and firms.</p><p>Features1.Adding Smart Art2.Inserting Shapes3. Inserting an Image4. Slide Transitions5. Adding Animations</p> <p>thanks a lot for your support.</p> | |
| 2585. |
Three torms of water areard |
| Answer» <p>solid(ice) , liquid(water) and gas(steam)</p> | |
| 2586. |
Distinguish between a |
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| 2587. |
Distinguish between heat and temperature. |
| Answer» <p>•The hotter an object is, the faster the motion of the molecules inside it. Thus, theheatof an object is the total energy of all the molecular motion inside that object.•Temperature, on the other hand, is a measure of the averageheatorthermalenergy of the molecules in a substance.</p> | |
| 2588. |
(a) Distinguish betveen natural and artiticial magnets |
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| 2589. |
If one of the zeros of the Cubic polynomial ax'+ bx + cx + d is zero, then the productof other two zeros is -a. |
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| 2590. |
roughwhat different angles should a rectangle be rotated to be in symmetricalsition with the original position? |
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| 2591. |
Name a mirror that can give an erect and enlarged image of an object. |
| Answer» <p>A concavemirror can give an erect and enlarged imagewhen the objectis placed between focus and the pole of themirror.</p> | |
| 2592. |
16. What is Wurtz reaction? |
| Answer» <p>The Wurtz reaction, named after Charles-Adolphe Wurtz, is a coupling reaction in organic chemistry, organometallic chemistry and recently inorganic main group polymers, whereby two alkyl halides are reacted with sodium metal in dry ether solution to form a higher alkane: 2R–X + 2Na → R–R + 2Na+X.</p> | |
| 2593. |
Different between convex lens and concave lens? |
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| 2594. |
Refer to the given figure. Therock X can be(A) Granite(B) Pumice(C) Marble(D) Shaleに |
| Answer» <p>option (B) is correct.</p> | |
| 2595. |
31. Observe the diagrom and name the following.a) PEb) EFc) FSd) LA |
| Answer» <p>a) PE- Incident rayb) EF- Refracted raysc) FS - emergent raysd) angle A- Angle of prismLike my answer if it was useful</p> <p>Thanks for the answer 😀😁👍👌</p> | |
| 2596. |
To find the dimensions of h = E/v |
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| 2597. |
u UVUU.c) doctor(d) chefComplete the spelling of the following:निम्नलिखित की वर्तनियों को पूरा कीजिए)vi age b. s ipp_d1. woo__ cutte_e _ilv_rc.f.faW |
| Answer» <p>I love you so much your cuye</p> <p>1)village2)skipped3) fairly4)woodcutte5)silver6) wood</p> <p>1)village 2)skipped 3)fairly 4)woodcutter5)silver 6)wood </p> <p>1)village 2)skipped 3)fairly 4)woodcutte 5)silver 6)wood</p> | |
| 2598. |
How is friction useful? |
| Answer» <p>Walking : Beacuse of friction we are able to walk.</p><p>Driving : car would not start moving if it wasn't for the friction of the tires against the street. With no friction, the tires would just spin.</p> | |
| 2599. |
Classification is useful because |
| Answer» <p>Classificationis importantbecauseit allows scientists to identify, group, and properly name organisms via a standardized system (Linnaeus Taxonomy); based on similarities found in the organisms DNA/RNA (genetics), Adaptations (Evolution), and Embryonic development (Embryology) to other known organisms to better.</p> | |
| 2600. |
How many octahedral voids are there in 0.5 mole of a compound having cubicclose packed structure? |
| Answer» <p>Moles = 0.5</p><p>Octahedral voids = NNo. of atoms = M X Na = 0.5 X 6.022 X 10^23 = 3.011 X 10^23</p><p>No. of atoms = octahedral voids = 3.011 X 10^23</p> | |